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* [Bug tree-optimization/50161] New: [4.7 Regression] wrong code with -fno-tree-ter and __builtin_popcountl
@ 2011-08-23 7:54 zsojka at seznam dot cz
2011-08-23 8:01 ` [Bug middle-end/50161] " jakub at gcc dot gnu.org
` (3 more replies)
0 siblings, 4 replies; 5+ messages in thread
From: zsojka at seznam dot cz @ 2011-08-23 7:54 UTC (permalink / raw)
To: gcc-bugs
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=50161
Bug #: 50161
Summary: [4.7 Regression] wrong code with -fno-tree-ter and
__builtin_popcountl
Classification: Unclassified
Product: gcc
Version: 4.7.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: tree-optimization
AssignedTo: unassigned@gcc.gnu.org
ReportedBy: zsojka@seznam.cz
Host: x86_64-pc-linux-gnu
Target: x86_64-pc-linux-gnu
Created attachment 25081
--> http://gcc.gnu.org/bugzilla/attachment.cgi?id=25081
reduced testcase
Output:
$ gcc -O2 -fno-tree-ter -funroll-loops testcase.c
$ ./a.out
Aborted
Tested revisions:
r177969 - fail
r173150 - OK
4.6.1 - OK
^ permalink raw reply [flat|nested] 5+ messages in thread* [Bug middle-end/50161] [4.7 Regression] wrong code with -fno-tree-ter and __builtin_popcountl 2011-08-23 7:54 [Bug tree-optimization/50161] New: [4.7 Regression] wrong code with -fno-tree-ter and __builtin_popcountl zsojka at seznam dot cz @ 2011-08-23 8:01 ` jakub at gcc dot gnu.org 2011-08-23 8:41 ` jakub at gcc dot gnu.org ` (2 subsequent siblings) 3 siblings, 0 replies; 5+ messages in thread From: jakub at gcc dot gnu.org @ 2011-08-23 8:01 UTC (permalink / raw) To: gcc-bugs http://gcc.gnu.org/bugzilla/show_bug.cgi?id=50161 Jakub Jelinek <jakub at gcc dot gnu.org> changed: What |Removed |Added ---------------------------------------------------------------------------- Status|UNCONFIRMED |NEW Last reconfirmed| |2011-08-23 CC| |jakub at gcc dot gnu.org Target Milestone|--- |4.7.0 Ever Confirmed|0 |1 --- Comment #1 from Jakub Jelinek <jakub at gcc dot gnu.org> 2011-08-23 07:53:48 UTC --- Caused by http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=175261 , looking into it. ^ permalink raw reply [flat|nested] 5+ messages in thread
* [Bug middle-end/50161] [4.7 Regression] wrong code with -fno-tree-ter and __builtin_popcountl 2011-08-23 7:54 [Bug tree-optimization/50161] New: [4.7 Regression] wrong code with -fno-tree-ter and __builtin_popcountl zsojka at seznam dot cz 2011-08-23 8:01 ` [Bug middle-end/50161] " jakub at gcc dot gnu.org @ 2011-08-23 8:41 ` jakub at gcc dot gnu.org 2011-08-23 15:53 ` jakub at gcc dot gnu.org 2011-08-23 15:57 ` jakub at gcc dot gnu.org 3 siblings, 0 replies; 5+ messages in thread From: jakub at gcc dot gnu.org @ 2011-08-23 8:41 UTC (permalink / raw) To: gcc-bugs http://gcc.gnu.org/bugzilla/show_bug.cgi?id=50161 --- Comment #2 from Jakub Jelinek <jakub at gcc dot gnu.org> 2011-08-23 08:21:25 UTC --- The simplify_const_unary_operation changes from that patch look totally wrong. ^ permalink raw reply [flat|nested] 5+ messages in thread
* [Bug middle-end/50161] [4.7 Regression] wrong code with -fno-tree-ter and __builtin_popcountl 2011-08-23 7:54 [Bug tree-optimization/50161] New: [4.7 Regression] wrong code with -fno-tree-ter and __builtin_popcountl zsojka at seznam dot cz 2011-08-23 8:01 ` [Bug middle-end/50161] " jakub at gcc dot gnu.org 2011-08-23 8:41 ` jakub at gcc dot gnu.org @ 2011-08-23 15:53 ` jakub at gcc dot gnu.org 2011-08-23 15:57 ` jakub at gcc dot gnu.org 3 siblings, 0 replies; 5+ messages in thread From: jakub at gcc dot gnu.org @ 2011-08-23 15:53 UTC (permalink / raw) To: gcc-bugs http://gcc.gnu.org/bugzilla/show_bug.cgi?id=50161 --- Comment #3 from Jakub Jelinek <jakub at gcc dot gnu.org> 2011-08-23 15:51:55 UTC --- Author: jakub Date: Tue Aug 23 15:51:45 2011 New Revision: 177991 URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=177991 Log: PR middle-end/50161 * simplify-rtx.c (simplify_const_unary_operation): If op is CONST_INT, don't look at op_mode, but use instead mode. * optabs.c (add_equal_note): For FFS, CLZ, CTZ, CLRSB, POPCOUNT, PARITY and BSWAP use operand mode for operation and TRUNCATE/ZERO_EXTEND if needed. * doc/rtl.texi (ffs, clrsb, clz, ctz, popcount, parity, bswap): Document that operand mode must be same as operation mode, or VOIDmode. * config/avr/avr.md (paritysi2, *parityqihi2.libgcc, *paritysihi2.libgcc, popcountsi2, *popcountsi2.libgcc, *popcountqihi2.libgcc, clzsi2, *clzsihi2.libgcc, ctzsi2, *ctzsihi2.libgcc, ffssi2, *ffssihi2.libgcc): For unary ops use the mode of operand for the operation and add truncate or zero_extend around if needed. * config/c6x/c6x.md (ctzdi2): Likewise. * config/bfin/bfin.md (clrsbsi2, signbitssi2): Likewise. * gcc.dg/pr50161.c: New test. Added: trunk/gcc/testsuite/gcc.dg/pr50161.c Modified: trunk/gcc/ChangeLog trunk/gcc/config/avr/avr.md trunk/gcc/config/bfin/bfin.md trunk/gcc/config/c6x/c6x.md trunk/gcc/doc/rtl.texi trunk/gcc/optabs.c trunk/gcc/simplify-rtx.c trunk/gcc/testsuite/ChangeLog ^ permalink raw reply [flat|nested] 5+ messages in thread
* [Bug middle-end/50161] [4.7 Regression] wrong code with -fno-tree-ter and __builtin_popcountl 2011-08-23 7:54 [Bug tree-optimization/50161] New: [4.7 Regression] wrong code with -fno-tree-ter and __builtin_popcountl zsojka at seznam dot cz ` (2 preceding siblings ...) 2011-08-23 15:53 ` jakub at gcc dot gnu.org @ 2011-08-23 15:57 ` jakub at gcc dot gnu.org 3 siblings, 0 replies; 5+ messages in thread From: jakub at gcc dot gnu.org @ 2011-08-23 15:57 UTC (permalink / raw) To: gcc-bugs http://gcc.gnu.org/bugzilla/show_bug.cgi?id=50161 Jakub Jelinek <jakub at gcc dot gnu.org> changed: What |Removed |Added ---------------------------------------------------------------------------- Status|NEW |RESOLVED Resolution| |FIXED --- Comment #4 from Jakub Jelinek <jakub at gcc dot gnu.org> 2011-08-23 15:55:02 UTC --- Fixed. ^ permalink raw reply [flat|nested] 5+ messages in thread
end of thread, other threads:[~2011-08-23 15:55 UTC | newest] Thread overview: 5+ messages (download: mbox.gz / follow: Atom feed) -- links below jump to the message on this page -- 2011-08-23 7:54 [Bug tree-optimization/50161] New: [4.7 Regression] wrong code with -fno-tree-ter and __builtin_popcountl zsojka at seznam dot cz 2011-08-23 8:01 ` [Bug middle-end/50161] " jakub at gcc dot gnu.org 2011-08-23 8:41 ` jakub at gcc dot gnu.org 2011-08-23 15:53 ` jakub at gcc dot gnu.org 2011-08-23 15:57 ` jakub at gcc dot gnu.org
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